Thank you, I would like to pose a general question ie.the nonlinear P^2 + Q^2 <= Smax^2 , regarding the P,Q flows on a line, can it be linearized in some way? I was thinking to say P = S*cos(theta) , Q = S *sin(theta), with 0<= theta <= pi/2 , but again this is nonlinear as it containts sin and cos . I am trying to build a linear version of this constraint many weeks now, and I would like, if possible, any idea from you , if you have thought of it. This would help eg in a simple linear program, with line constraints. Thank you, John Eaftos
________________________________ From: Ray Zimmerman <[email protected]> To: MATPOWER discussion forum <[email protected]> Sent: Tuesday, April 16, 2013 1:20 PM Subject: Re: MATPOWER It should work fine depending on the parameters. Very high R/X ratios in the lines can possibly cause numerical difficulties. And, of course, MATPOWER would only model a balanced system. It does not model an unbalanced 3-phase network. -- Ray Zimmerman Senior Research Associate 419A Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On Apr 15, 2013, at 1:36 PM, Aftognosia Aftognosia <[email protected]> wrote: Hello, > > >Is it possible to use MATPOWER in order to implement ACOPF in a radial >distribution system ? > > >Are there any limitations for distribution system? > > >
